多个异常写到一个元组中，既有父类也有子类，会优先选择子类错误吗？

为什么我的子弹到了右边之后不一样大，有些位置直接不显示

from tkinter import*
from tkinter import messagebox
class Application(Frame):
    def __init__(self,master=None):
        super().__init__(master)
        self.master=master
        self.createwidget()

    def createwidget(self):
        btntext=(("MC","M+","M-","MR"),
                 ("C","±","➗","✖"),
                 (7,8,9,"➖"),(4,5,6,"＋"),
                 (1,2,3,"="),
                 (0,"."))
        Entry(self).grid(row=0,column=0,columnspan=4,pady=10)
        for rindex,r in enumerate(btntext):
            #print(r)
            for cindex,c in enumerate(r):
                #print(c)
                if c=="=":
                    Button(self,text=c,width=2).grid(row=rindex+1,column=cindex,
                                                            rowspan=2,sticky="ew")
                elif c==0:
                    Button(self,text=c,width=2).grid(row=rindex+1,column=cindex,
                                                            columnspan=2,sticky="ew")
                elif c==".":
                    Button(self,text=c,width=2).grid(row=rindex+1,column=cindex,sticky="ew")
                else:
                    Button(self,text=c,width=2).grid(row=rindex+1,column=cindex,sticky="ew")


if __name__=="__main__":
    root=Tk()
    root.geometry("500x700+400+200")
    root.title("计算器")
    app=Application(master=root)
    root.mainloop()

老师，我的代码跟老师视频里的一样，为什么我运行的不显示呢

(venv) D:\python project\math2>python setup.py sdist upload

running sdist

running check

warning: check: missing required meta-data: url

warning: sdist: manifest template 'MANIFEST.in' does not exist (using default file list)

warning: sdist: standard file not found: should have one of README, README.txt, README.rst

writing manifest file 'MANIFEST'

creating supermath-1.0

creating supermath-1.0\supermath

making hard links in supermath-1.0...

hard linking setup.py -> supermath-1.0

hard linking supermath\__init__.py -> supermath-1.0\supermath

hard linking supermath\demo1.py -> supermath-1.0\supermath

hard linking supermath\demo2.py -> supermath-1.0\supermath

Creating tar archive

removing 'supermath-1.0' (and everything under it)

running upload

Submitting dist\supermath-1.0.tar.gz to https://upload.pypi.org/legacy/

Upload failed (400): '1143..' is an invalid value for Author-email. Error: Use a valid email address See https://packaging.python.

org/specifications/core-metadata for more information.

error: Upload failed (400): '1143..' is an invalid value for Author-email. Error: Use a valid email address See https://packaging.

python.org/specifications/core-metadata for more information.

老师这是哪里出问题了。。。我的邮箱已经verified了啊

老师，我这个情况怎么办？

为啥我运行错误

老师好,我发现实际操作中往往还没抬起上一个键下一个键已经按下了.

举个例子 我一直往右然后想往上,右键还没抬起直接按住了上建,此时坦克如我所愿会往上移动,但是接下来抬起右键坦克就会停止移动.

有没有这样一个操作,只要我还按着一个方向键,坦克就还能移动,比如用成员资格判断操作来检测收集按键操作的event_list列表中是否还存在属性为KEYDOWN的成员,若存在MainGame.TANK_P1.stop保持为False

老师，画红线的位置为什么这样写，直接写成“（i+1)"不行吗？

为什么我这里创造虚拟环境失败

为何我的右键之后没有找到Diagrams这个选项？

老师我想问一下，在执行os.path.split()函数的时候是以元组的形式输出的，可是课件里面是说以列表形式返回，所以课件是不是错了？

视频中滑块test01里面有参数value，command =test01不需要传参数的么？

如下代码，为什么不加“”时会多一行换行符？？而专门加了“”就正常了？

#用行读取函数读一整个文件
with open(r"ddd1501.txt","r",encoding="utf-8") as h:
    while True:
        flag = h.readline()
        if flag:
            #print(flag,end="")#这里不加“”的时候会多一行换行符
            print(flag)
        else:
            break

运行结果如下：

txt文件中内容如下：